High stability in dark current level
As a result of the semiconductive inner surface of the CPM, no charge-up effects occur at the glass surface. This
results in a very high stability of the dark current level over time, with no sudden changes (bursts). The semiconductive
surface also causes high-light recovery times to be extremely small.
Fig. 3: Typical photo electron spectrum
Excellent photon counting resolution
2000
7
At gains exceeding 10 the single photo electron pulse is
PMT
perfectly separated from the electrical noise, due to a sa-
CPM
turation effect of the channel. The CPM exhibits single
1500
photon resolution with excellent peak to valley ratios.
Fig. 3 shows the single photo electron spectrum taken
from a multi-channel analyzer compared to a conventional
1000
photomultiplier (Fig. 3).
500
Choice of entrance window
0
0
50
100
150
200
250
300
The CPM is available with different window materials,
which are:
Channel
MgF2, Quartz, UV-glass, and Borosilicate glass. The com-
bination of different photocathodes and entrance windows
results in a spectral range from 115 nm to 900 nm. Other
window materials and photocathode combinations are
available on a custom basis (Fig. 4.1 and 4.2).
Fig. 4.1: Typical spectral response
100
10
1
C 952
C 973
Available related products
C 922
C 911
200
C 972
0.1
100
300
400
500
600
700
800
900
• High Voltage supply
Wavelength (nm)
CHV 30N (supplies 1 CPM, negative output voltage),
CHV 30P (supplies 1 CPM, positive output voltage),
J4-3N (supplies 10 to 15 CPMs)
Fig. 4.2: Typical spectral response
100
10
1
• CPM Modules
MP900-series: Photoncounting module with
TTL output, including CPM,
electronic and high voltage
MD900-series: DC module including high
voltage supply, amplifier,
C 943
C 944
C 962
C 942
I/U converter, output 0 to 10 V,
bandwidth 1kHz
MH900-series: High voltage module,
including CPM and
0.1
high voltage power supply
100
200
300
400
500
600
700
800
900
Wavelength (nm)
• CPM Formats
1
3
/ “ C900-series
EU
USA
1
2
/ “ C1300-series
PerkinElmer Optoelectronics GmbH
Heimann Opto
65020 Wiesbaden, Germany
PerkinElmer Optoelectronics
2175 Mission College Blvd.
Santa Clara, CA 95054
3
4
/ “ C1900-series
PO-Box 3007
http://www.perkinelmer.com/opto
Tel. ++1 (408) 565 - 0830
Fax ++1 (408) 565 - 0703
Datasheets on request
http://www.perkinelmer.com/opto
PERKINELMER [ PERKINELMER OPTOELECTRONICS ]
